Game guide · JIEHUIDB
Tower of Hanoi: a guide for your next round
Move the complete stack of discs from the left tower to the right tower without placing a larger disc on a smaller one. Start a new round when you are ready to try again. Choose three to eight discs. All discs begin on the left tower. Try the rule on the board, then read the next instruction.
One puzzle with adjustable disc count from three to eight. Disc counts are settings, not separate game entries. Undo is available; refreshing restarts.
Bring this focus to a round
A careful first move helps you understand the round. An empty tower accepts any disc; an occupied tower accepts only a smaller disc than its top disc. The game area remains available above the explanation.
Your goal
Read the position before choosing your next action. Move the complete stack of discs from the left tower to the right tower without placing a larger disc on a smaller one. Keep the goal in mind before your next move.
A walkthrough of the rules
- Choose three to eight discs. All discs begin on the left tower.
- Select the source tower, then the destination tower. Only the top disc moves.
- An empty tower accepts any disc; an occupied tower accepts only a smaller disc than its top disc.
- Use Undo to reverse a move. Complete the puzzle when the right tower holds the whole stack.
Keyboard and screen controls
Tap the source tower and then its destination. Tap the selected tower again to cancel the selection. Try the rule on the board, then read the next instruction.
An example before you play
A careful first move helps you understand the round. Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves.
Where a round can go wrong
A careful first move helps you understand the round. Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected. Keep the goal in mind before your next move.
Common questions
During a round, what is the aim of Tower of Hanoi?
Move the complete stack of discs from the left tower to the right tower without placing a larger disc on a smaller one. The instructions above use these same rules.
When I start, how do the controls work?
Tap the source tower and then its destination. Tap the selected tower again to cancel the selection. A new round resets the current game.
When I start, can you show an example?
Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves. You can start a new round from the game controls.
For this game, which mistake should I avoid?
Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected. Scores here do not represent cash or prizes.
For this game, what rules and limits are used here?
One puzzle with adjustable disc count from three to eight. Disc counts are settings, not separate game entries. Undo is available; refreshing restarts. The instructions above use these same rules.
For this game, how many people can play here?
Solo. This is local browser play, not internet matchmaking. The controls work with mouse or touch.
For this game, what is the minimum number of moves?
For n discs the minimum is 2^n − 1. The board shows the minimum for your selected disc count. The worked example offers another way to follow the rule.
On this page, can I move several discs together?
No. One top disc moves at a time. No download or player account is required.
What does Undo do?
It restores the immediately previous puzzle state and move count. The worked example offers another way to follow the rule.
When I start, can I use the middle tower?
Yes. It is a temporary holding tower needed to move the stack legally. The game is played locally in your browser.
